Apparatus and Process for Rotating Products

ABSTRACT

A conveying system and method for rotating conveyed product. The system can have a conveyor on which is conveyed a rolled product in a machine direction. The system can have conveyor having a first portion on which is conveyed a rolled product having an axis oriented in the machine direction, and the rolled product being partially wrapped in an open ended tube of polymer film. The system has a second portion on which the rolled product is rotated in a horizontal plane such that its axis is oriented in a cross machine direction, and a third portion on which the rolled product is conveyed while oriented in the cross machine direction to a sealing operation that seals the open ends of the tube of polymer film.

FIELD OF THE INVENTION

The present invention is related to apparatuses and processes forconveying and rotating rolled products, including packaged rolledproducts such as rolled toilet paper and paper towels.

BACKGROUND OF THE INVENTION

Products made from absorbent fibrous webs are used for a variety ofpurposes. For example, rolled absorbent products such as paper towelsand toilet tissues are in constant use in modern industrializedsocieties. Such rolled products, as well as related products includingfacial tissues, napkins, and the like, are typically packaged for retailsale in flexible polymer packaging. Packaging can include single rollsin a polymeric film wrapper or packages of multiple rolled productsbundled into a single larger polymeric film wrapper.

Current approaches to forming packages of rolled products include wellknown “flow wrap” technologies. Flow wrappers have an infeed mechanism,such as a conveyor or pushing device, a film feed assembly, a formingarea, a cutting head, and a discharge area. Product to be wrapped isplaced on the infeed conveyor, which moves generally horizontally todeliver product to a forming area. A single film can be drawn from afilm feed assembly into the forming area, where the film is formed overa forming horn into a tube around the product as the product is pushedinto the tube. The tube can be sealed along its edges to form apartially sealed package, the partially sealed package still being openat two its two ends after the film is cut at the trailing end. Forcertain packages, including packages of rolled products, after formingthe partially sealed packages the partially sealed packages are directedat a 90-degree angle into an end sealer apparatus, which closes andseals the open ends of each tube, thereby creating a completely closedpackage.

In current systems that use conveying systems to move products andpackages, the 90-degree re-direction is achieved by a mechanism thattransfers product to a discharge mechanism that is perpendicular to theinfeed, such that the two open ends of the partially sealed packagewhich were oriented in line with the direction of the conveyor, areoriented orthogonally to the direction of travel, i.e., toward the twosides of the conveyor. The two open ends are then folded and sealed toform a finished package. Such conveyors necessitate an L-shapeconfiguration, as described in co-owned and co-pending application Ser.No. 12/680,276, filed Nov. 19, 2012 in the name of Overley et al.

While L-shaped conveyors for flow wrapping packaging are very common anduseful for packaging rolled products, the requirement that the conveyingpath be L-shaped presents at least two problems. First, the L-shapedisrupts a linear path, increasing the “footprint” or floor spacenecessary for the conveying equipment. Often the packaged rolledproducts that are diverted from a first direction to a second directionat a right angle, need to be reintroduced into a conveying path in thefirst direction with additional right-angle turns. Secondly, theL-shaped deviation from a linear conveying path can work against amanufacturer's desire for modularity in a line of modular unitoperations related to conveying, arranging, packaging, and bundling ofrolled products.

Certain packages of rolled products, particularly packages of multiplerolls, that can lie flat with a relatively large package area resting onthe conveyor belt can be turned by way the use of a conveying systemhaving two side-by-side conveyer belts that can be driven at differentspeeds. By driving one of the belts faster than the other, the productthat spans both belts will be caused to rotate in the plane of themoving belts. By controlling the relative speeds of the belts, the apartially wrapped package of rolled product can be made to rotate apredetermined rotation, such as 90 degrees, through a conveyingdistance, and thereafter conveyed in a straight path into afolder/sealer operation for final folding and sealing.

The problem with two side-by-side conveyer belts that can be driven atdifferent speeds is with respect to small or dimensionally narrowproducts, such as single rolls of rolled product. Specifically, a rolledproduct having dimensions typically associated with paper towels ortoilet paper, when oriented such that the length dimension is parallelwith the direction of conveyance, will sit in the gap between the twoside-by-side belts, and will resist rotation. Furthermore, rotation isnot as controlled, as the partially rotated rolled product tends itselfto roll (i.e. spin about its axis) on the conveyor belt, therebychanging position during conveyance.

Accordingly, there is an unmet need for a conveying system for flowwrapping rolled products that eliminates the need for an L-shapedconveying path.

Further, there is an unmet need for a conveying system that can reliablyhandle both individual rolled products and packaged products of multiplerolled products.

SUMMARY OF THE INVENTION

A conveying system and method for rotating conveyed product isdisclosed. The system can have a conveyor on which is conveyed a rolledproduct in a machine direction. The system can have conveyor having afirst portion on which is conveyed a rolled product having an axisoriented in the machine direction, and the rolled product beingpartially wrapped in an open ended tube of polymer film. The system hasa second portion on which the rolled product is rotated in a horizontalplane such that its axis is oriented in a cross machine direction, and athird portion on which the rolled product is conveyed while oriented inthe cross machine direction to a sealing operation that seals the openends of the tube of polymer film.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view of a of an apparatus of the presentinvention;

FIG. 2 is a plan schematic view of a turning conveyor;

FIG. 3 is a an elevation view of a portion of the apparatus of thepresent invention;

FIG. 4 is a cross sectional view of 4-4 in FIG. 3; and

FIG. 5 is a schematic representation showing the movement of a portionof the apparatus of the present invention and resulting rollorientations; the upper portion of FIG. 5 schematically depicts theproduct rotation portion from a side view and the lower portion of FIG.5 schematically depicts a top view of the resulting orientation of theproducts at each stage as they travel down the conveyors.

DETAILED DESCRIPTION OF THE INVENTION

The present invention is an improvement to flow wrap packagingapparatuses and processes. The apparatus rotates partiallywrapped/sealed rolled products 90 degrees for final end-seal operationswithout the need for a 90-degree turn in the conveyor system.

An apparatus 10 for rotating rolled products and packages of rolledproducts 90 degrees during conveyance in a flow wrap packaging system isshown in FIG. 1. The apparatus can have three major components: (1) aproduct rotation portion 20; (2) a product end sealing portion 26; and,(3) as part of the product rotation portion 20, an overhead rotatorportion 40.

The product rotation portion 20 can have two side-by-side conveyors 22and 24, and side guide rails 18. The product end sealing portion 26 canalso have a pair of side rails 12, and at least one product sealingconveyor 16. Additionally the product end sealing portion 26 can have atleast one overhead conveyor-like belt 14 that serves to stabilizerotated product by applying pressure to the product while it moves atthe same rate as product sealing conveyor 16.

The product rotation portion 20 can be fed by any of known infeedconveyors (not shown). In an embodiment the conveyor of the productrotation portion, extended upstream, also serves as the infeed conveyor.The conveyors, including an infeed portion, move in a machine directionMD and move partially wrapped rolled absorbent products from the firststage of a flow wrapper (not shown), such that the partially wrappedrolled absorbent products are enclosed in an open-ended tube of polymerfilm when they enter product rotation portion 20. The partially wrappedrolled absorbent products can be one or more rolled absorbent productsthat are enclosed in a tube of polymer film having the two ends of thefilm open and ready for folding and sealing in the next stage of thepackaging process.

In general, as shown schematically in the plan view of FIG. 2, therolled absorbent products 30 can be oriented such that they each enterthe product rotation portion 20 with their respective axes of theircenter winding oriented in a machine direction MD. That is, if therolled absorbent product 30 has a cardboard core 32 upon which it isrolled, the axis 34 of the core 32 can be oriented in the machinedirection MD. The partially wrapped rolled absorbent product enters theproduct rotation portion 20 after having been through the first stage ofa flow wrapper, such that the rolled absorbent product(s) is enclosed ina tube of polymer film 36, the tube having two open ends 38. In theembodiment shown in FIG. 2, two rolled absorbent products 30, which canbe two rolls of paper towels, for example, are shown.

As shown in plan view FIG. 2, product rotation portion 20 can have twoside-by-side conveyor belts 22 and 24, each moving in the machinedirection MD and separated by space 25 between the two conveyor belts,which space can be from about 1 mm to about 25 mm. First conveyor belt22 can be run in the machine direction MD at a speed V1, and secondconveyor belt 24 can be independently run in the machine direction V2,which can be greater than V1. As depicted in a sequence from Stage 1 toStage 3 in FIG. 2, the relatively faster velocity V2 of conveyor belt 24(and the relatively slower velocity V1 of conveyor belt 22) serves tocause the partially wrapped rolled products to rotate, in this case,counter clockwise when viewed from above. The distance travelled in themachine direction MD can be predetermined and controlled, such that upona 90-degree rotation, as shown at Stage 3 in FIG. 2, the rotated packagecan be transferred to the product end sealing portion 26 of theapparatus 10 on another conveyor system, such that the rotation ends. Assuch, the axes of the center of each rolled absorbent product 30, suchas axis 34 of the cardboard tube 32, are oriented in the cross machinedirection CD, perpendicular to the machine direction MD. In thisorientation, the partially wrapped package can be processed through thenext stage of the flow wrapper in which the open ends 38 of the polymertube 36 can be folded and sealed in a manner known in the art of flowwrappers.

As can be understood, the apparatus as illustrated permits productrotation to occur in a linear conveyance path, without the requirementthat the conveyance path make a right angle, e.g., an L-shaped path.Such a linear path is beneficial in providing for better utilization ofmanufacturing floor space, and permitting modular unit operations to bedesigned in a linear-path system.

In general, two or more rolled absorbent products having gone throughthe first stage of a flow wrapper and laying flat on at least one broadside can have a generally rectangular “footprint” on the conveyingsystem having an area dimension that sufficiently spans both the a firstand second conveyor belts 22 and 24 such that the effect of the gap 25is minimal and product rotation can occur repeatedly and reliably. Butrelatively small footprint packages, including partially wrappedpackages of a single roll of rolled absorbent product can be challengingto repeatedly and reliably rotate. The single roll of absorbent producttends to ride in the gap between the belts 22 and 24 with little of thepackage surface area being in sufficient contact with either belt toreliably turn 90 degrees. Also, the cylindrical nature of a single rollmakes it prone to rolling out of place on a moving conveyor even ifrotation does happen. The problems are exacerbated with relativelysmaller rolls.

For this reason, as shown in FIG. 3, the product rotator portion 20includes an overhead rotator portion 40. The overhead rotator portion 40can have at least one moveable rotator assembly 42, the rotator assembly42 can be moveable relative to a height adjustable frame 44, which ismoveable via attached vertically oriented adjusting shafts 46 to astationary frame 48. A drive motor 50 can be coupled to the heightadjustable frame 44 to move it up or down vertically V as necessary toadjust the working distance of the rotator cup 58 (described in moredetail below) relative to the conveyor belts 22 and 24.

Mounted on the height adjustable frame 44 is at least one rotatorassembly 42. Two rotator assemblies are shown in FIG. 3. The rotatorassembly 42 comprises a rotary crank arm 52 connected to linkage 54which supports and drives an MD-reciprocating motion of rotator motor 56(i.e., the second motor) which itself drives the horizontal rotatingmotion of a rotator cup 58. Rotator motor 56, or any other motordetailed herein, may be any type of motor known in the art, for example,a servo motor, AC motor, DC motor, pneumatic motor, and hydraulic motor.In one particular form of apparatus 10, rotator motor 56 is a servomotor. In operation, as conveyors 22 and 24 (or a single conveyor) movein an MD direction (left to right as shown in FIG. 3), a crank arm motor(i.e., the first motor, not shown, but mounted behind the apparatus asshown in FIG. 3) turns the output shaft of which turns rotary crank arm52 in a counter-clockwise (in the embodiment of FIG. 3) motion. Therotary crank arm need not rotate in a consistent rotational velocity,but can be slowed or sped up as necessary for the desired cycle time andmotion of the MD-reciprocation of rotator motor 56. The rotary crank arm52 is connected to a first end 64 of linkage 54, and through its rotarymotion slides a second end 66 of linkage 54 in a linear, reciprocatingMD-direction motion.

Vertically offset from second end 66 is a first secondary linkage end66A for secondary linkage 68. A second secondary linkage end 70A ofsecondary linkage 68 (not shown, as it is behind motor 56 in FIG. 3) isvertically offset from a rotator motor connection, but depicted in FIG.3 at the location 70. The vertical offset of rotator motor connection 70and second secondary linkage end 70A align with the axis SA of therotator motor 56, which remains substantially vertically oriented inuse.

As can be understood from the above description in light of FIG. 3, asthe rotary crank arm 52 rotates the rotator motor 56 travels in a pathhaving both a vertical vector component and horizontal (i.e., MD) vectorcomponent. Further, as the motor 56 travels in a somewhat ellipticalpath in a vertical plane, the rotator cup 58 rotates in a horizontalplane. The rotator cup 58 is shown in cross section in FIG. 4. While notbeing limited to only this configuration, in one form, the rotator cupis generally U-shaped, having two flanges 60, and optionally a shapedmember 62 integrated in the top of the rotator cup 58, the shaped member62 taking generally the shape of a portion of the individual rolledproduct to be turned. In another form, rotator cup 58 may be sized andshaped to grip formats of differing numbers of rolls of product that arebundled in an open-ended tube of polymer film. In this form, the flanges60 themselves, and/or the distance between flanges, may be adjustable.In another form, the rotator cup may be adjustably sized and shaped togrip both individual rolls and formats of differing numbers of rolls ofproducts. In this form, the flanges 60 may be split to accommodate asingle roll in an open-ended tube of polymer film and/or a multiplenumber of rolls that are bundled together in an open-ended tube ofpolymer film. The rotator cup 58 can be made of any material suitablefor turning rolled products, including spring steel and plastic. Springsteel can be stiff enough to reliably turn the rolled product, butflexible enough to have some give outwardly for relatively larger rollsizes. The rotator cup 58 may also have end guides to assist inregistering (e.g., centering) the rolled product in the rotator cupprior to, or as the cup rotates the product.

The upper portion of FIG. 5 depicts the product rotation portion from aside view, and the lower portion of FIG. 5 is a top view depicting theresulting orientation of products at each stage as they travel down theconveyors 22, 24. Accordingly, the motion of the rotator motor 56 androtator cup 58 are illustrated in the upper portion of FIG. 5, whichschematically shows the motion of the rotator assembly in a sequence ofpositions A-G, and the lower portion of FIG. 5 depicts the rotation of arolled product (or package of rolled products) in the same sequence ofpositions A-G. The rotator motor moves in a vertical (i.e., X-Z) planeas it rotates a rolled absorbent product 30 in a horizontal (i.e., X-Y)plane as shown in the lower portion of FIG. 5. The upper part of FIG. 5shows a series of images representing different positions of rotatormotor 56 as it is moved in a via linkage 54 by rotator crank 52. Therelevant elements of the rotator assembly 42 are identified in theirschematic form in the first image at the left of the series of images.As shown, a rotator cup 58 is attached to a rotator motor 56, which isshown in its fixed position with respect to first end 64 and second end66 of linkage 54 as well as the rotator motor connection 70. The rolledproduct 30 orientation shown in the lower portion of FIG. 5 is renderedschematically as a rectangle and in the upper portion the rotator cup 58is shown in both orientations simultaneously, i.e. before and afterrotate, but it is understood that what is depicted can be partiallywrapped rolled product in an open-ended tube of polymer film 36 which isbeing rotated to go to the next unit operation to have the open endsfolded and sealed.

At position A, the rotator cup 58 is at its maximum elevation withrespect to conveyors 22 and 24 as a rolled absorbent product 30 ismoving in the MD on one or both of conveyors 22 and 24 which can each bemoving at the same speed. Rolled absorbent product 30 can be orientedsuch that a roll axis 34 is oriented parallel to the MD, as shown inFIG. 5. The roll axis 34 can be the longitudinal axis in the center ofthe cardboard tube of a roll of absorbent products, for example. Atposition B, the rotator cup contacts a rolled absorbent product 30 at amatched velocity to conveyors 22 and 24. At position C rotation ofrolled absorbent product 30 in the horizontal plane begins, and atposition D the rotator cup is at its minimum elevation relative to theconveyors 22, 24, and, likewise at maximum rolled product compression,and has moved the rolled absorbent product 30 into mid-rotation at whichtime the roll axis 34 can be at about a 45 degree angle A from MD. Atposition E rotation of rolled absorbent product 30 is complete, with theroll axis 34 being at about a 90 degree angle A from MD. In some formsof the apparatus/system/method disclosed herein, the rolled absorbentproduct 30 can be over rotated past an angle A of 90 degrees, and thenbrought back by the rotator cup before the rotator cup loses contactwith the rolled absorbent product, to an angle A of 90 degrees to helpsquare the product. This over rotation past 90 degrees and then briningthe product back to 90 degrees at position E helps control the productorientation on the conveyor and minimizes over-rotation when processspeeds are increased. At position F, the rolled absorbent product 30 isreleased at a velocity matched to the velocity of conveyors 22, 24. Andat position G, the rotator cup 58 is at its maximum elevation to startthe next cycle. While passing through its maximum elevation, anunrotated roll may be allowed to pass underneath to be rotated by asecond downstream rotator. In the case of a downstream rotator, a rollthat is already rotated by the upstream rotator is allowed to passunderneath.

Between positions B, C, E and F, at which stages the MD velocity of therotator cup 58 can match the velocity of the conveyors 22, 24. In oneform, the MD velocity of the rotator cup should match the conveyors 22,24 as this is the period in which the cup is acquiring the product andthe point at which it gains full control cannot necessarily be known.However, between positions C and E, the velocity of the cup can bevaried to effect a predetermined spacing of product on the conveyors, orto allow for a faster cycle time by permitting the rolled product to“slip” back, i.e., move slower than the conveyors to allow more time tomake the roll rotation.

Once rotation of the partially wrapped rolled absorbent product 30 iscomplete, the partially wrapped rolled absorbent product 30 leaves theproduct rotation portion 20 to the product end sealing portion 26 atwhich time folding and sealing occurs by means well known in the art toachieve a complete, wrapped package ready for further processing,shipping or storage. Upper stabilizing belts 14 can be optionallysupplied to provide for downward pressure on the rotated products tokeep them in position for end sealing. For example, single rolls ofproducts can have a tendency to roll due to the forces of the conveyor.Upper stabilizing belts 14 can be positioned at a suitable height,depending on the height of the roll(s) to apply relatively lightpressure to the roll(s) and move at the same machine direction rate asthe conveyor in the end sealing portion.

In various examples, the invention can be described in non-limiting waysas follows in the following paragraphs.

-   -   A. An apparatus for rotating a rolled product, the apparatus        comprising:        -   a. at least one conveyor on which is conveyed at least one            rolled product in a machine direction;        -   b. a rotator assembly moveably attached via a reciprocating            linkage to a framework, the rotator assembly being driven by            a first motor such that the rotator assembly cycles in a            closed path in a vertical plane;        -   c. the rotator assembly having mounted to the linkage a            second motor having a rotator cup, the framework being            positioned with respect to the conveyor such that upon each            cycle of the rotator assembly the rotator cup cycles close            enough to the conveyor such that it can contact the rolled            product throughout part of the cycle.    -   B. The apparatus of Paragraph A, comprising two conveyors        running side by side.    -   C. The apparatus of Paragraphs A or B, wherein each conveyor is        driven individually, and one conveyor can be driven at a speed        greater than the other.    -   D. The apparatus of any of Paragraphs A-C, wherein the framework        is height-adjustable.    -   E. The apparatus of any of Paragraphs A-D, wherein the closed        path of the rotator assembly approximates an ellipse.    -   F. The apparatus of any of Paragraphs A-E, wherein the rotator        cup grips the rolled product.    -   G. The apparatus of any of Paragraphs A-F, wherein the rolled        product has a roll axis oriented in the machine direction, and        wherein the rolled product is partially wrapped in an open-ended        tube of polymer film.    -   H. A conveying system comprising a conveyor on which is conveyed        a rolled product in a machine direction, the conveying        comprising:        -   a. a first portion on which is conveyed a rolled product            having an axis oriented in the machine direction, wherein            the rolled product is partially wrapped in an open ended            tube of polymer film;        -   b. a second portion on which the rolled product is rotated            in a horizontal plane such that its axis is oriented in a            cross machine direction,        -   c. a third portion on which the rolled product is conveyed            while oriented in the cross machine direction to a sealing            operation that seals the open ends of the tube of polymer            film.    -   I. The conveying system of Paragraph H, wherein the second        portion comprises a rotator assembly moveably attached via a        reciprocating linkage to framework positioned in operable        relationship to the second portion, the rotator assembly being        driven by a first motor such that the rotator assembly cycles in        a closed path in a vertical plane, the rotator assembly having        mounted to the linkage a second motor having a rotator cup, the        rotator assembly being positioned with respect to the second        portion such that upon each cycle the rotator cup contacts a        partially wrapped package of rolled product throughout part of        the cycle.    -   J. The conveying system of Paragraph H or I, wherein the third        portion conveys partially wrapped rolled products to an end        sealing operation.    -   K. The conveying system of any of Paragraphs H-J, wherein the        second portion comprises two conveyors operating side by side.    -   L. The conveying system of any of Paragraphs H-K, wherein each        of the two conveyors is individually driven and can operate at        different speeds.    -   M. The conveying system of any of Paragraphs H-L, wherein        rotator assembly is vertically adjustable relative to the second        portion.    -   N. A method for rotating a rolled product, the method comprising        the steps of:        -   a. providing a conveyor moving in a machine direction;        -   b. providing in operable relationship to the conveyor a            product rotator, the product rotator being mounted on a            frame in operable relationship to the conveyor and            comprising:            -   i. a rotator assembly moveably attached via a                reciprocating linkage to the frame, the rotator assembly                being driven by a first motor such that the rotator                assembly cycles in a closed path in a vertical plane;            -   ii. the rotator assembly having mounted to the linkage a                second motor having a rotator cup, the rotator assembly                being positioned with respect to the conveyor such that                upon each cycle the rotator cup contacts the rolled                product throughout part of the cycle;        -   c. conveying the rolled product on the conveyor while            rotating the rolled product by contacting the rolled product            with the rotator cup and reorienting the rolled product in a            horizontal plane.    -   O. The method of Paragraph N, wherein the rolled product is a        sanitary tissue product selected from the group of paper towels        and toilet tissue.    -   P. The method of Paragraph N or O, wherein the sanitary tissue        product is rolled on a core having a core axis, and the core        axis is rotated through 90 degrees when rotated.    -   Q. The method of any of Paragraphs N-P, wherein the conveyor is        a split conveyor comprising two conveyor belts running side by        side.    -   R. The method of any of Paragraphs N-Q, wherein each of the two        conveyor belts is driven separately and can be driven at        different speeds.    -   S. A method of any of Paragraphs N-R, wherein the rolled product        is partially wrapped in an open-ended polymer tube.    -   T. The method of any of Paragraphs N-S, further comprising the        step of sealing the open ends of the polymer tube to form a        polymer-wrapped package of rolled sanitary tissue products.

The dimensions and values disclosed herein are not to be understood asbeing strictly limited to the exact numerical values recited. Instead,unless otherwise specified, each such dimension is intended to mean boththe recited value and a functionally equivalent range surrounding thatvalue. For example, a dimension disclosed as “40 mm” is intended to mean“about 40 mm.”

Every document cited herein, including any cross referenced or relatedpatent or application and any patent application or patent to which thisapplication claims priority or benefit thereof, is hereby incorporatedherein by reference in its entirety unless expressly excluded orotherwise limited. The citation of any document is not an admission thatit is prior art with respect to any invention disclosed or claimedherein or that it alone, or in any combination with any other referenceor references, teaches, suggests or discloses any such invention.Further, to the extent that any meaning or definition of a term in thisdocument conflicts with any meaning or definition of the same term in adocument incorporated by reference, the meaning or definition assignedto that term in this document shall govern.

What is claimed is:
 1. An apparatus for rotating at least one rolledproduct, the apparatus comprising: a. at least one conveyor on which isconveyed at least one rolled product in a machine direction; b. arotator assembly moveably attached via a reciprocating linkage to aframework, the rotator assembly being driven by a first motor such thatthe rotator assembly cycles in a closed path in a vertical plane; c. therotator assembly having mounted to the linkage a second motor having arotator cup, the framework being positioned with respect to the conveyorsuch that upon each cycle of the rotator assembly the rotator cup cyclesclose enough to the conveyor such that it can contact the rolled productthroughout part of the cycle.
 2. The apparatus of claim 1, comprisingtwo conveyors running side by side.
 3. The apparatus of claim 2, whereineach conveyor is driven individually, and one conveyor can be driven ata speed greater than the other.
 4. The apparatus of claim 1, wherein theframework is height-adjustable.
 5. The apparatus of claim 1, wherein theclosed path of the rotator assembly approximates an ellipse.
 6. Theapparatus of claim 1, wherein the rotator cup grips the rolled product.7. The apparatus of claim 1, wherein the at least one rolled product hasa roll axis oriented in the machine direction, and wherein the at leastone rolled product is partially wrapped in an open-ended tube of polymerfilm.
 8. The apparatus of claim 1, wherein the at least one rolledproduct is an individual rolled product.
 9. The apparatus of claim 1,wherein the at least one rolled product is multiple rolled products thatare bundled in an open-ended tube of polymer film.
 10. A conveyingsystem comprising a conveyor on which is conveyed at least one rolledproduct in a machine direction, the conveying comprising: a. a firstportion on which is conveyed at least one rolled product having an axisoriented in the machine direction, wherein the at least one rolledproduct is partially wrapped in an open ended tube of polymer film; b. asecond portion on which the at least one rolled product is rotated in ahorizontal plane such that its axis is oriented in a cross machinedirection, c. a third portion on which the at least one rolled productis conveyed while oriented in the cross machine direction to a sealingoperation that seals the open ends of the tube of polymer film.
 11. Theconveying system of claim 10, wherein the second portion comprises arotator assembly moveably attached via a reciprocating linkage toframework positioned in operable relationship to the second portion, therotator assembly being driven by a first motor such that the rotatorassembly cycles in a closed path in a vertical plane, the rotatorassembly having mounted to the linkage a second motor having a rotatorcup, the rotator assembly being positioned with respect to the secondportion such that upon each cycle the rotator cup contacts a partiallywrapped package of rolled product throughout part of the cycle.
 12. Theconveying system of claim 10, wherein the third portion conveyspartially wrapped rolled products to an end sealing operation.
 13. Theconveying system of claim 10, wherein the second portion comprises twoconveyors operating side by side.
 14. The conveying system of claim 13,wherein each of the two conveyors is individually driven and can operateat different speeds.
 15. The conveying system of claim 10, whereinrotator assembly is vertically adjustable relative to the secondportion.
 16. The conveying system of claim 10, wherein the at least onerolled product is an individual rolled product.
 17. The conveying systemof claim 10, wherein the at least one rolled product is multiple rolledproducts that are bundled in an open-ended tube of polymer film.
 18. Amethod for rotating at least one rolled product, the method comprisingthe steps of: a. providing a conveyor moving in a machine direction; b.providing in operable relationship to the conveyor a product rotator,the product rotator being mounted on a frame in operable relationship tothe conveyor and comprising:
 1. a rotator assembly moveably attached viaa reciprocating linkage to the frame, the rotator assembly being drivenby a first motor such that the rotator assembly cycles in a closed pathin a vertical plane;
 2. the rotator assembly having mounted to thelinkage a second motor having a rotator cup, the rotator assembly beingpositioned with respect to the conveyor such that upon each cycle therotator cup contacts the rolled product throughout part of the cycle; c.conveying the at least one rolled product on the conveyor while rotatingthe at least one rolled product by contacting the at least one rolledproduct with the rotator cup and reorienting the at least one rolledproduct in a horizontal plane.
 19. The method of claim 18, wherein theat least one rolled product is a sanitary tissue product selected fromthe group of paper towels and toilet tissue.
 20. The method of claim 18,wherein the sanitary tissue product is rolled on a core having a coreaxis, and the core axis is rotated by about 90 degrees when rotated. 21.The method of claim 18, wherein the conveyor is a split conveyorcomprising two conveyor belts running side by side.
 22. The method ofclaim 18, wherein each of the two conveyor belts is driven separatelyand can be driven at different speeds.
 23. A method of claim 18, whereinthe at least one rolled product is partially wrapped in an open-endedpolymer tube.
 24. The method of claim 23, further comprising the step ofsealing the open ends of the polymer tube to form a polymer-wrappedpackage of rolled sanitary tissue products.
 25. The apparatus of claim18, wherein the at least one rolled product is an individual rolledproduct.
 26. The apparatus of claim 18, wherein the at least one rolledproduct is multiple rolled products that are bundled in an open-endedtube of polymer film.